Stage variable

programming flash
1

I have this class (.as file) :


package {
    
    import flash.display.Stage;

    public class CustomObject {
    
        public var stage:Stage;
    
        public function CustomObject(stageRef:Stage) {

            stage = stageRef;
        }
    }
}

In the main (.fla file)

var objInterfaz:CustomObject = new CustomObject (this);

But I got this error

implicit coercion of a value of type stage

Any help is appreciated
Thanks